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ibmvnic: Deactivate RX pool buffer replenishment on H_CLOSED 

If H_CLOSED is returned, halt RX buffer replenishment activity
until firmware sends a notification that the driver can reset.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Thomas Falcon 2017-05-26 10:30:48 -04:00 committed by David S. Miller
parent b8c80b8413
commit f185a49a77
1 changed files with 21 additions and 0 deletions
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21
drivers/net/ethernet/ibm/ibmvnic.c
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@ -200,6 +200,15 @@ static void free_long_term_buff(struct ibmvnic_adapter *adapter,
dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
}
static void deactivate_rx_pools(struct ibmvnic_adapter *adapter)
{
int i;
for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
i++)
adapter->rx_pool[i].active = 0;
}
static void replenish_rx_pool(struct ibmvnic_adapter *adapter,
struct ibmvnic_rx_pool *pool)
{
@ -217,6 +226,9 @@ static void replenish_rx_pool(struct ibmvnic_adapter *adapter,
int index;
int i;
if (!pool->active)
return;
handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
be32_to_cpu(adapter->login_rsp_buf->
off_rxadd_subcrqs));
@ -287,6 +299,15 @@ failure:
dev_kfree_skb_any(skb);
adapter->replenish_add_buff_failure++;
atomic_add(buffers_added, &pool->available);
if (lpar_rc == H_CLOSED) {
/* Disable buffer pool replenishment and report carrier off if
* queue is closed. Firmware guarantees that a signal will
* be sent to the driver, triggering a reset.
*/
deactivate_rx_pools(adapter);
netif_carrier_off(adapter->netdev);
}
}
static void replenish_pools(struct ibmvnic_adapter *adapter)